It would be best to first get an ophthalmologist opinion on the severity of your ptosis. If your ptosis is severe enough to cause visual obstruction (this is assessed by lid measurements and visual field testing), you will be able to claim Medisave for your treatment because your ptosis surgery will be deemed a medically-needed operation.
Only an ophthalmologist will be able to assess this.
Another word of caution is that not all ophthalmologists are good for ptosis repair, nor are all plastic surgeons. My advice would be to choose an ophthalmologist or plastic surgeon who is trained specially in lid surgery. Or better still, have the procedure done under the consultation of an ophthalmologist in conjunction with a plastic surgeon.
Hope that helps!
Dr Claudine Pang